Apparatus for the evaporation of fluids.



. C. NEUBERGER.

. J. LOEBINGER & H

F. P. BERGH, H

APPARATUS FOR THE EVAPORATION 0F FLUIDS.

APPLICATION FILED APR. [4. i911- RENEWED APR. 10,1916.

Patented Nov. 7', 1916.

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FREDERICK PENTZ BERGH, HUGO J. LOEBING ER, AND HENRY CHARLES NEUBERGER,

OF NEW YORK, N. Y., ASSIGNORS, BY MESNE ASSIGNMENTS, TO GENERAL REDUC-TION COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

APPARATUS FOR THE EVAPORATION OE FLUIDS.

Specification of Letters Patent.

Application filed April 14, 1911, Serial No. 621,142. Renewed April 10,1916. Serial No, 90,284.

To all whom it may concern: I

Be it known that we, FREDERICK P. BnRoH, HUGO J. LOEBINGER, and HENRY C.NEUBER- GER, citizens of the United States, residing at New York, in thecounty of New York and State of New York, have invented cer tain new anduseful Improvements in Appa-' ratus for the Evaporation of Fluids, ofwhich the following is a specification.

Our invention relates to an apparatus for the evaporation of fluids.

The object of the invention is to provide an apparatus particularlydesigned for effective utilization in carrying out the process claimedin our application for Letters Patent, Serial Number 464,257, filedNovember 24th, 1908, (Patent No. 997,950 of July 18, 1911.) While, incarrying out the proc ess set forth in said application various forms ofapparatus might be employed, a construction embodying some of the general features of the apparatus described but not claimed in that.process application in conjunction with the additional features hereinset forth has been found to be effective in use and of particularadvantage, enabling the steps of creating and maintaining the differentstrata in the vaporizing chamber to be carried out. i

Our invention is embodied in preferable form in the apparatushereinafter de scribed and illustrated in the accompanying drawings.

In these drawings, Figure 1 is a side view in elevation, partly invertical sect-ion of the apparatus; Fig. 2, a side-viewpartly brokenaway looking from the left of Fig. 1

toward the right; Fig. 3, a top plan View,

partly broken away, on a small scale of the apparatus and Fig. 4, adetail of part of the atomizer.

Referring to the drawings, the fluid to be evaporated and containing insolution, suspension or emulsion, a solid, viscid or oily content isplaced in a container vessel 1 and fed therefrom by a pipe 2 to suitableatomizing means 3. These atomizing means are mounted on a support 4which is attached directly against the inside surface of one wall of atank, vessel, box or room 5, constituting a vaporizing and collectingchamber. This vessel is polygonal in form, the object of such formationbeing to insure a straight unimpeded sweep of the sprayed fluid in alayer across the chamber in distinction from gyratory or vorteX movementsuch as.might be given to the spray by a chamber with curved walls.Preferably the vessel is rectangular. although in some cases it might bedesirable to employ some other polygonal figure, as

a heptagonal or hexagonal shape.

The atomizing means 3 preferably extend across the entire width of onewall of the chamber for the purpose of spraying the fluid being led intothe branch pipes of the atomizer, emerges fromthe upper open endsthereof. An air tank 5, communicating with an air compressor 6, forcesair through the pipe 7 and out through the horizontally projectingnozzles 8 disposed over the open nozzles of the fluid pipe and thus thefluid as it emerges'from the supply pipe is met by blasts of air whichproject the. fluid from the rear wall in a layer of fine spray acrossthe chamber.v

The force of the air pressure on the atom izer is so regulated as not todrive the spray across the chamber with such velocity as to strike theopposite wall with a rebounding force so as to avoidbreaking up thestratum formation of the spray.

'Below the atomizer and above the bottom of the chamber inthe wall 9 ofthe chamber, which wall is at an angle to the wall against which theatomizer is mounted and in the case of the preferred rectangular chamberin one of the walls at right angles and adjacent to theatomizer-supporting wall, there is provided a rectangular opening 10extending substantially. the entire width of the wall 9 and serving toadmit a body of air or other vaporizing gas. Anexpansion and heatenboxor' chamber 11, communicates with this opening, extending the entirelength thereof. In this box maybe mounted a steam heated coil 12 for thepurpose of heating the air or'other gas passing Patented Nov. 7, 1916.

into the main chamber. A blower 13preferably also extending the entirewidth of the box 11 supplies the air or other gas through a flat pipe14, substantially rectangular in cross section and also coinci-. The

dent in width with that of the box. cross area of the entrance box andof the opening- 10 is greater than the cross area of the supply pipe 14,whereby the air is expanded. and the velocity of the current is reducedasit enters the vaporizing chamber 7 so that the vaporizing air or othergas will move across the chamber at a comparatively low velocity therebymerely occupying the space below the atomizer and avoiding such impactwith the opposite wall as to cause a rebound and a -mixing and vortexaction in the chamber. This controlled velocity in conjunction with theangle to the projection of the spray at which the body of gas moves alsoserves to form and maintain such body quiet zone of gaseous matter belowit into.

of gas in a stratum separate from the layer or stratum of spray. Theformation of this vaporizing stratum above the bottom of the chamberalso creates a distinct stratum or which the concentrate resulting fromthe evaporation drops. The entering body of air or other gas rises andmeets the layer of spray and serves to effectively evaporate the fluidwholly or partly and the dried or concentrated product falls to thebottom of r the chamber. A gate 15 may be provided at the bottom ifdesired, to enable the concentrate product to be removed.

Near its upper end and-on the side of the chamber at ,which the atomizeris located and abovethe latter is provided inthe wall of the chamber alongitudinal rectangular efliuent' opening 16 extending substantiallythe entire width of the Wall. This opening has a greater area than theinlet opening 10 and 1s of suflicient capacity to permit theunimpeded'continuous flow of an amount of vapor equal to the amount ofvaporizing air introduced plus the amount of air driven through'theatomizer. To regulate this coordinate outward rate of flow of the vapor,a sliding regulator door. or shutter 17 adapted to increase or lessenthe size of the openmg 16, may be provided. The regulated capacity ofthis exit and the movement of the vapor and other efliuent towardtheexit at an angleboth to the direction of projection oi the spray and tothe direction of the incoming vaporizing gas insures that the eflluentwill also'be maintained in a distinct stratum above-the .spray and drawnofl at 'such a rate as to avoid commingling with the other bodies orbreaking up the stratification.

From the opening 16 leads a pi e 18 of a width coincident with the widtof the opening to avoid obstructing the flow and creating back pressure.This pipe is preferably rectangularin cross-section. It leads theefliuent to a collecting chamber 19, the walls of which may be made ofgauze or other permeable material, if desired, to perfrom the line 2323to 2424 is formed andmaintained the efiiuent stratum, the vaporparticles of which pass out of the exit open-- ing.

Having thus described our invention, what we claim 1s:

1. An apparatus for evaporating fluids containing in solution,suspension or emulsion a solid, viscid or oily content consisting of apolygonal vaporizing chamber, atomizing means placed adjacent one Wallof the chamber and operable to project spray in a layer from said wallacross the chamber, means to admit in a substantially horizontal sheet avaporizing body of gas to said chamber below the atomizer and exitmeansfor the vapor, substantially as described. I

2. An apparatus for the evaporation of fluids consisting of a vaporizingchamber, a

source of fluid supply, atomizing meanscommunicating with said sourceand mounted adjacent the wall 015' the chamber and having means toproject spray across the chamber, means below the atomizing means toadmit a body of moving vaporizing gas in a sheet substantially parallelto the spray but at an angle to the projected movement of the spray, andan effluent opening above the atomizer, substantially as described.

3. 'An apparatus for the evaporation of fluids consisting of a chamberin which the evaporation is conducted, atomizing means 7 in said chamberoperable to direct the spray in a layer across the chamber, means offluid supply communicating with said atomizer, and an elongated gasadmitting openingbelow the atomizer and extending longitudinally at anangle to the length of the atomizer, and an efliuent opening above theatomizer, substantially as described.

4. An apparatus for evaporation of fluids, consisting of a chamber inwhich the evaporation is conducted, an atomizer in said chamberextending across the same and hav 'ing means .to direct the spray in ahorizontal layer across the area of the chamber, said chamber having agas admitting opening below the atomizer and extending at an angle totheatomizer, means to impel a body of gas through said opening at anangle to the projected movement of the spray and said chamber having anelongated opening above the atomizer and on the same side of the chamberas the atomizer to permit the es cape of the efliuent, substantially asdescribed.

5. An apparatus for the evaporation of fluids, consisting of a polygonalvessel, a source of fluid supply, anatomizer located within said vesselagainst one side wall thereof and extending the entire width of saidwall, said atomizer having meansto project the spray from the wallacross'the interior of the vessel in a horizontal layer,

said vessel having below the level of the atomizer an elongated,rectangular opening in a side of the wall adjacent to and at an angle tothe atomizer-supporting wall, said opening extending substantially theentire width of its wall and a rectangular opening atomizer for sprayingthe same, said vessel having an opening below the level of said fluid,means to direct a current of gas through said opening at an angle totheprojected movement of the spray, a pipe to supply said gas, and achamber between the plpe and opening having a greater area than that ofthe pipe, substantially as described. 7. An apparatus for theevaporation of fluids consisting of a vessel to receive the fluid, anatomizer, said vessel having an elongated opening above said atomizer, a

regulating device to control the area of said opening, and means toadmit a. body of vaporizing gas to the vessel, substantially asdescribed.

8. An apparatus for the evaporation of I fluids consisting of a vessel,an atomizer mounted therein, said vessel having an elongated openingbelow the level of the atomizer, a gas admitting pipe having a crossarea equal to the cross area of the opening, said vesselhaving above theatomizer an elongated efliuent opening and a pipe of cross area equal tothat of the opening and leading from said opening and a vapor-separatingchamber to which said pipe leads, substantially as described.

9. An apparatusi'or the ei aporation of fluids consisting of a closedvessel with atomizing means attached to the wall of the chamber abovethe bottom thereof to leave a collecting space below the atomizers intowhich the dried or concentrated particles are permitted to fall bygravity and to be collected away from the air current, and means toproject a vaporizing body of gas horizontally across said chamber tovaporize the atomized liquid.

10. An apparatus for the evaporation of fluids consisting of a vessel,atomizing means mounted on the wall of the vessel so as to be adaptedtoproject a spray horizontally across the chamber of the vessel andlocated above the bottom of the vessel a sufficient distance to permitthe dried or concentrated particles to separate from the spray and dropto the bottom of said vessel into a collecting space, and means foradmitting and projecting a current of air or, other gas. from the wall'of the vessel across the same'in a plane parallel to the plane ofprojection of the spray.-

In testimony whereof we have aflixed our I signatures in presence of twowitnesses.

FREDERICK rnu'rz BERGH.

HUGOJ, LOEBINGER.

HENRY CHARLES NEUBERGER.

Witnesses:

VFREDERKTS. MORSELL,

MA IE F. RYAN.

